package com.ruoyi.service;

import cn.hutool.core.lang.Assert;
import cn.hutool.core.lang.tree.Tree;
import cn.hutool.core.lang.tree.TreeNodeConfig;
import cn.hutool.core.lang.tree.TreeUtil;
import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson2.JSON;
import com.ruoyi.common.annotation.DataScope;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.core.domain.TreeSelect;
import com.ruoyi.common.core.domain.entity.SysDept;
import com.ruoyi.common.core.domain.entity.SysRole;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.core.domain.vo.DeptUserDto;
import com.ruoyi.common.core.mapper.SysDeptMapper;
import com.ruoyi.common.core.mapper.SysUserMapper;
import com.ruoyi.common.core.service.BaseServiceImpl;
import com.ruoyi.common.core.text.Convert;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.kiam.KiamUtil;
import com.ruoyi.common.utils.spring.SpringUtils;
import com.ruoyi.mapper.SysRoleMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import static com.ruoyi.service.SysUserServiceImpl.getRootDept;

/**
 * 部门管理 服务实现
 */
@Service
public class SysDeptServiceImpl extends BaseServiceImpl<SysDeptMapper, SysDept> {
    @Autowired
    private SysDeptMapper deptMapper;
    @Autowired
    private SysUserMapper userMapper;

    @Autowired
    private SysRoleMapper roleMapper;

    /**
     * 查询部门管理数据
     *
     * @param dept 部门信息
     * @return 部门信息集合
     */

    @DataScope(deptAlias = "d")
    public List<SysDept> selectDeptList(SysDept dept) {
        return deptMapper.selectDeptList(dept);
    }

    /**
     * 查询部门树结构信息
     *
     * @param dept 部门信息
     * @return 部门树信息集合
     */

    public List<TreeSelect> selectDeptTreeList(SysDept dept) {
        List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
        return buildDeptTreeSelect(depts);
    }

    /**
     * 构建前端所需要树结构
     *
     * @param depts 部门列表
     * @return 树结构列表
     */

    public List<SysDept> buildDeptTree(List<SysDept> depts) {
        List<SysDept> returnList = new ArrayList<SysDept>();
        List<Long> tempList = depts.stream().map(SysDept::getDeptId).collect(Collectors.toList());
        for (SysDept dept : depts) {
            // 如果是顶级节点, 遍历该父节点的所有子节点
            if (!tempList.contains(dept.getParentId())) {
                recursionFn(depts, dept);
                returnList.add(dept);
            }
        }
        if (returnList.isEmpty()) {
            returnList = depts;
        }
        return returnList;
    }

    /**
     * 构建前端所需要下拉树结构
     *
     * @param depts 部门列表
     * @return 下拉树结构列表
     */

    public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts) {
        List<SysDept> deptTrees = buildDeptTree(depts);
        return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
    }

    /**
     * 根据角色ID查询部门树信息
     *
     * @param roleId 角色ID
     * @return 选中部门列表
     */

    public List<Long> selectDeptListByRoleId(Long roleId) {
        SysRole role = roleMapper.selectRoleById(roleId);
        return deptMapper.selectDeptListByRoleId(roleId, role.getDeptCheckStrictly());
    }

    /**
     * 根据部门ID查询信息
     *
     * @param deptId 部门ID
     * @return 部门信息
     */

    public SysDept selectDeptById(Long deptId) {
        return deptMapper.selectDeptById(deptId);
    }

    /**
     * 根据ID查询所有子部门（正常状态）
     *
     * @param deptId 部门ID
     * @return 子部门数
     */

    public int selectNormalChildrenDeptById(Long deptId) {
        return deptMapper.selectNormalChildrenDeptById(deptId);
    }

    /**
     * 是否存在子节点
     *
     * @param deptId 部门ID
     * @return 结果
     */

    public boolean hasChildByDeptId(Long deptId) {
        int result = deptMapper.hasChildByDeptId(deptId);
        return result > 0;
    }

    /**
     * 查询部门是否存在用户
     *
     * @param deptId 部门ID
     * @return 结果 true 存在 false 不存在
     */

    public boolean checkDeptExistUser(Long deptId) {
        int result = deptMapper.checkDeptExistUser(deptId);
        return result > 0;
    }

    /**
     * 查询部门是否存在用户
     *
     * @param deptId 部门ID
     * @return 结果 true 存在 false 不存在
     */

    public boolean checkDeptExistRole(Long deptId) {
        int result = deptMapper.checkDeptExistRole(deptId);
        return result > 0;
    }

    /**
     * 校验部门名称是否唯一
     *
     * @param dept 部门信息
     * @return 结果
     */

    public boolean checkDeptNameUnique(SysDept dept) {
        Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
        SysDept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
        if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue()) {
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }

    /**
     * 校验部门是否有数据权限
     *
     * @param deptId 部门id
     */

    public void checkDeptDataScope(Long deptId) {
        if (!SysUserServiceImpl.isAdmin(SecurityUtils.getUserId())) {
            SysDept dept = new SysDept();
            dept.setDeptId(deptId);
            List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
            if (StringUtils.isEmpty(depts)) {
                throw new ServiceException("没有权限访问部门数据！");
            }
        }
    }

    /**
     * 新增保存部门信息
     *
     * @param dept 部门信息
     * @return 结果
     */

    public int insertDept(SysDept dept) {
        SysDept info = deptMapper.selectDeptById(dept.getParentId());
        if (info!=null) {
            dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
        }else{
            dept.setAncestors("0");
        }
        dept.insert();
        updateRootDeptId(dept.getDeptId());

        return 1;
    }

    /**
     * 修改保存部门信息
     *
     * @param dept 部门信息
     * @return 结果
     */

    public int updateDept(SysDept dept) {
        SysDept newParentDept = deptMapper.selectDeptById(dept.getParentId());
        SysDept oldDept = deptMapper.selectDeptById(dept.getDeptId());
        if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept)) {
            String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
            String oldAncestors = oldDept.getAncestors();
            dept.setAncestors(newAncestors);
            updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
        }
        String leader = "";
        if (dept.getLeaderUserId() != null) {
            SysUser leaderUser =  userMapper.selectById(dept.getLeaderUserId());
            leader = leaderUser.getNickName();
        }
        dept.setLeader(leader);
        dept.updateById();

        if (dept.getLeaderUserId() == null) {
            baseMapper.clearDeptLeader(dept.getDeptId());
        }
        if (UserConstants.DEPT_NORMAL.equals(dept.getStatus()) && StringUtils.isNotEmpty(dept.getAncestors())
                && !StringUtils.equals("0", dept.getAncestors())) {
            // 如果该部门是启用状态，则启用该部门的所有上级部门
            updateParentDeptStatusNormal(dept);
        }
        roleMapper.updateDeptName(dept.getDeptId(), dept.getDeptName());
        userMapper.updateDeptName(dept.getDeptId(), dept.getDeptName());
        updateRootDeptId(dept.getDeptId());
        return 1;
    }

    // 修改根部门id
    private void updateRootDeptId(Long deptId){
        SysDept dept = deptMapper.selectById(deptId);
        SysDept rootDept = getRootDept( dept, deptMapper);
        dept.setRootDeptId(rootDept.getDeptId());
        SysDept parentDept = deptMapper.selectById(rootDept.getParentId());
        dept.setParentRootDeptId(parentDept == null ? rootDept.getRootDeptId() : parentDept.getRootDeptId());
        dept.updateById();
    }

    /**
     * 修改该部门的父级部门状态
     *
     * @param dept 当前部门
     */
    private void updateParentDeptStatusNormal(SysDept dept) {
        String ancestors = dept.getAncestors();
        Long[] deptIds = Convert.toLongArray(ancestors);
        deptMapper.updateDeptStatusNormal(deptIds);
    }

    /**
     * 修改子元素关系
     *
     * @param deptId       被修改的部门ID
     * @param newAncestors 新的父ID集合
     * @param oldAncestors 旧的父ID集合
     */
    public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors) {
        List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
        for (SysDept child : children) {
            child.setAncestors(child.getAncestors().replaceFirst(oldAncestors, newAncestors));
        }
        if (children.size() > 0) {
            deptMapper.updateDeptChildren(children);
        }
    }

    /**
     * 删除部门管理信息
     *
     * @param deptId 部门ID
     * @return 结果
     */

    public void deleteDeptById(Long deptId) {
        Assert.isFalse(this.hasChildByDeptId(deptId), "存在下级部门,不允许删除");
        Assert.isFalse(this.checkDeptExistUser(deptId), "部门存在用户,不允许删除");
        this.checkDeptDataScope(deptId);
        baseMapper.deleteById(deptId);
    }

    /**
     * 递归列表
     */
    private void recursionFn(List<SysDept> list, SysDept t) {
        // 得到子节点列表
        List<SysDept> childList = getChildList(list, t);
        t.setChildren(childList);
        for (SysDept tChild : childList) {
            if (hasChild(list, tChild)) {
                recursionFn(list, tChild);
            }
        }
    }

    /**
     * 得到子节点列表
     */
    private List<SysDept> getChildList(List<SysDept> list, SysDept t) {
        List<SysDept> tlist = new ArrayList<SysDept>();
        Iterator<SysDept> it = list.iterator();
        while (it.hasNext()) {
            SysDept n = (SysDept) it.next();
            if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue()) {
                tlist.add(n);
            }
        }
        return tlist;
    }

    /**
     * 判断是否有子节点
     */
    private boolean hasChild(List<SysDept> list, SysDept t) {
        return getChildList(list, t).size() > 0;
    }

    public List<DeptUserDto> getDeptUserTree() {
        return baseMapper.getDeptUserTree();
    }


    public List<DeptUserDto> getDeptPost() {
        return baseMapper.getDeptPost();
    }


    public List<DeptUserDto> getPostList() {
        return baseMapper.getPostList();
    }


    @DataScope(deptAlias = "t1", userAlias = "t1")
    public Object departmentManagementGetList(Map<String, Object> param) {
        List<SysDept> allDeptList = baseMapper.selectDeptListByUserType(param);
        allDeptList = filterByDeptName(allDeptList, (String) param.get("deptName"));
        List<Tree<Integer>> tree = TreeUtil.build(allDeptList, getParentId(allDeptList), new TreeNodeConfig().setChildrenKey("children").setIdKey("deptId").setParentIdKey("parentId").setNameKey("deptName"),
                (vo, treeNode) -> {
                    treeNode.putAll(JSON.parseObject(JSON.toJSONString(vo)));
                    treeNode.put("value", vo.getDeptId());
                    treeNode.put("label", vo.getDeptName());
                });
        return tree;
    }

    //递归获取父id
    private Integer getParentId(List<SysDept> allDeptList) {
        List<Long> deptIds = allDeptList.stream().map(SysDept::getDeptId).collect(Collectors.toList());
        SysDept dept = allDeptList.stream().filter(r -> !deptIds.contains(r.getParentId())).findAny().orElse(null);
        if (dept == null) {
            return 0;
        }
        return Math.toIntExact(dept.getParentId());
    }

    //过滤部门名称
    private List<SysDept> filterByDeptName(List<SysDept> allDeptList, String deptName) {
        if (deptName != null && StrUtil.isNotBlank(deptName)) {
            List<SysDept> filterDeptList = allDeptList.stream().filter(dept1 ->
                    dept1.getDeptName().contains(deptName)).collect(Collectors.toList());
            List<SysDept> fullDeptList = addSelfAndParent(allDeptList, filterDeptList);
            return fullDeptList;
        }
        return allDeptList;
    }

    //返回子节点集合 以及 子节点的父级节点
    private List<SysDept> addSelfAndParent(List<SysDept> allDeptList, List<SysDept> depts) {
        List<SysDept> deptList = new ArrayList<>();
        for (int i = 0; i < depts.size(); i++) {
            SysDept dept = depts.get(i);
            if (!deptList.contains(dept)) {
                deptList.add(dept);
            }
            addParent(deptList, allDeptList, dept);
        }
        return deptList;
    }

    //递归添加父节点
    private void addParent(List<SysDept> deptList, List<SysDept> allDeptList, SysDept dept) {
        SysDept parent = allDeptList.stream().filter(r ->
                r.getDeptId().longValue() == dept.getParentId().longValue()).findAny().orElse(null);
        if (parent != null) {
            deptList.add(parent);
            addParent(deptList, allDeptList, parent);
        }
    }

    /**
     * 更新部门使用状态
     */
    public void updateUse(Long deptId) {
        SysDept dept = baseMapper.selectById(deptId);
        dept.setStatus(UserConstants.DEPT_NORMAL.equals(dept.getStatus()) ? UserConstants.DEPT_DISABLE : UserConstants.DEPT_NORMAL);
        baseMapper.updateById(dept);

        List<SysDept> childs = baseMapper.selectChildrenDeptById(deptId);
        if (childs.size() > 0) {
            for (SysDept child : childs) {
                child.setStatus(dept.getStatus());
                baseMapper.updateById(child);
            }
        }
    }

    public void syncDept(Long startTime) throws Exception {
        List<SysDept> deptList = KiamUtil.syncDept(startTime);
        String parentId = null;
        syncDept( parentId,0L,deptList);
    }



    public void syncDept(String orgParentId,Long parentId,List<SysDept> deptList) throws Exception {
        for (SysDept dept : deptList) {
            if (dept.getOrgParentId() == orgParentId || (dept.getOrgParentId() != null && dept.getOrgParentId().equals(orgParentId))){
                dept.setParentId(parentId);
                SysDept old = baseMapper.getByOrgId(dept.getOrgId());
                dept.setAdministrativeLevel(dept.orgNoToAdministrativeLevel());
                if(old != null){
                    dept.setDeptId(old.getDeptId());
                    //updateDept(dept);
                }else{
                    insertDept(dept);
                }
                syncDept(dept.getOrgId(),dept.getDeptId(),deptList);
            }
        }
    }

}
